What is the purpose of a mock object in Ruby testing?

Which testing framework is commonly used for behavior-driven development (BDD) in Ruby?

A. MiniTest

B. Test::Unit

C. RSpec

D. Cucumber

What is the purpose of a test suite in Ruby testing?

A. A single test case

B. A group of related test cases

C. A test runner

D. None of the above

Which assertion method is commonly used in RSpec for testing equality of values?

A. expect(actual).to equal(expected)

B. assert_equal(actual, expected)

C. expect(actual).to eq(expected)

D. assert_equal(expected, actual)

What is the purpose of a mock object in Ruby testing?

A. Asserts that a particular condition is true

B. Provides a placeholder for a method that will be defined later

C. Checks if an object's methods are called with the correct arguments

D. Simulates the behavior of a real object